abstract |
The present invention relates to a method of preparing 2-{4-[4-(7-fluoro-naphthalen-1-yl)-piperazin-1-yl]-butoxy}-5,6,7,9-tetrahydro-1,7,9-triaza-benzocyclohepten-8-one. The method comprises reacting 1-(7-fluoro-naphthalen-1-yl)-piperazine hydrochloride with a compound of formula (II), wherein L in formula (II) is a leaving group. |